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…parse JdkHttpSender and UpstreamGrpcSenderProvider's fallback channel rely on java.net.URI to parse the endpoint host, which returns null for valid DNS names whose last label starts with a digit (JDK-8188305). EndpointUtil accepts these since open-telemetry#8746, so they previously failed with an opaque error on first export or a NullPointerException. Throw a clear error at sender construction instead. Part of open-telemetry#8745
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #8856 +/- ##
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- Coverage 91.44% 90.44% -1.01%
- Complexity 10667 11173 +506
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Files 1007 1032 +25
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Branches 3676 3975 +299
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| // grpc-java parses host names with java.net.URI, which returns null for some valid DNS names | ||
| // (JDK-8188305) that EndpointUtil accepts, so fail with a clear message. | ||
| if (endpoint.getHost() == null) { |
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Nit: since you filed grpc/grpc-java#13075 upstream, consider referencing it in this comment (alongside JDK-8188305) so a future maintainer knows this check can be relaxed once grpc-java fixes host validation on their side.
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Hi @hitkall — just a friendly reminder that this pull request is waiting on you. The dashboard status comment has the open items and is kept current.
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…emetry/exporter/sender/grpc/managedchannel/internal/1-UpstreamGrpcSenderProvider.java
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Resolves #8745, following the approach agreed in #8745 (comment).
Since #8746,
EndpointUtilaccepts valid RFC 1123 hosts thatjava.net.URIcan't parse, such asotlp.1234-k8s-namespace(JDK-8188305). The default OkHttp senders handle these, but two senders can't:JdkHttpSender:HttpRequest.Builder#urirejects a URI with no host, so the first export failed withunsupported URI.UpstreamGrpcSenderProvider(fallback channel only):ManagedChannelBuilder.forAddress(null, -1)threwNullPointerException: target. grpc-java validates hosts withURItoo, so passing the host fromURLdoesn't help. I reported that upstream in Hostnames whose last label starts with a digit are rejected (java.net.URI, JDK-8188305) grpc/grpc-java#13075.Both providers now throw an
IllegalArgumentExceptionwhen the sender is created. The message names the endpoint and suggests the OkHttp sender or a fully qualified host name. The gRPC check applies only when noManagedChannelis set explicitly, because an explicit channel doesn't use the endpoint.Tests
JdkHttpSenderProviderTest: throws for unparseable hosts, and succeeds forlocalhostand a*.svc.cluster.localname.UpstreamGrpcSenderProviderTest: the fallback channel throws, and an explicitly set channel still succeeds.🤖 Generated with Claude Code